We've found a total of 2 definitions for AJI:

Aji is a spicy sauce that often contains tomatoes, cilantro, hot peppers, onions, and water. Recipes vary dramatically from table to table, depending on the preference of the chef. Aji has been used in Peru since the times of the Incas, who called it uchu.
In Colombia and Ecuador, for example, food is traditionally mild, so aji can be added to almost any dish. It usually accompanies other foods such as Chugchucaras or Empanadas.
In Chile there is a similar variety of the condiment known as Ají Chileno, that differs with the additional ingredient of lemon juice.